AE like forced quit itself and now will not open up my video files because it says it is corrupted, even though it plays fine in quicktime. I get this message: "After Effects error: file 'MVI_9616.mov' cannot be imported - this 'MooV' file is damaged or unsupported."
First question. Has anything changed since this used to work? New anti virus software or update, driver update, system update, codec pack? Speaking of system, what is your OS and AE version. Speaking of AE version, is it up to date? If there have been no changes and ae is on the latest version, Reboot and try again. Try with a different movie file.
If AE won't open any .mov file try trashing your preferences. If that doesn't work you may have to re-install.